About ISO image An ISO image is an archive file (a.k.a. disk image) of an optical disc using a conventional ISO (International Organization for Standardization) format that is supported by many software vendors. ISO image is an unattached file format (like RAR and ZIP): it merges a series of files into one single file according to a definite format. ISO image files typically have a file extension of .ISO but Mac OS X ISO images often have the extension .CDR.
- How to “Burn” an ISO to a USB drive in OS X (thomashunter.name)
- Build your own NetBSD LiveCD (unix9.wordpress.com)
- USB Installation Media (wiki.archlinux.org)
- Modify a bootable .iso image (Mac OS) (sloblog.io)